Union-Companion Vein, Cornucopia Mine

The Union-Companion Vein, Cornucopia Mine is a gold, silver, copper, and lead mine located in Baker county, Oregon at an elevation of 6,401 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Union-Companion Vein, Cornucopia Mine
Secondary: Elk Creek Gold Mining Co
Secondary: Robert Emmet
Secondary: Red Jacket
Secondary: Forest Queen

Commodity

Primary: Gold
Primary: Silver
Primary: Copper
Primary: Lead
Tertiary: Arsenic
Tertiary: Zinc
Tertiary: Tellurium

Location

State: Oregon
County: Baker
District: Cornucopia

Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: Wallowa-Whitman National Forest

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Forest Industries Insurance Management Co.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Blue Mountain Section
Physiographic Detail: Wallowa Mountains

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Early Cretaceous

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cretaceous

Analytical Data

Not available

Materials

Ore: Pyrite
Ore: Sylvanite
Ore: Galena
Ore: Sphalerite
Ore: Chalcopyrite
Ore: Petzite

Comments

Comment (Deposit): THE UNION-COMPANION IS ONE OF SEVERAL VEINS WORKED BY THE CORNUCOPIA MINE. OTHERS INCLUDE THE LAST CHANCE, WHITMAN, WALLINGFORD, AND VALLEY VIEW. PRODUCTION WAS MOSTLY FROM THE UNION-COMPANION AND LAST CHANCE VEINS. ; INFO.SRC : 1 PUB LIT

Comment (Location): THE VEIN CROPS OUT AT ABOUT 6400 FT. ELEV., ABOUT ONE MILE NORTHWEST OF AND 1600 FT. ABOVE CORNUCOPIA TOWNSITE

Comment (Workings): THE VEIN HAS BEEN DEVELOPED AND MINED TO A DIP DEPTH OF 2400 FEET BELOW THE OUTCROP

Comment (Geology): GRANODIORITE STOCK AND APLITE DIKES. VEIN IS MAINLY QUARTZ WITH LOCAL INCLUSIONS OF ALTERED HOST ROCKS AND GOUGE.

References

Reference (Deposit): GODSPEED, G.E., 1939, GEOLOGY OF THE GOLD QUARTZ VEINS OF CORNUCOPIA: AMERICAN INST. MINING AND METALLURGICAL ENGINEERS TECH. PUB. 1035.

Reference (Deposit): SWARTLEY, A.M., 1914, ORE DEPOSITS IN NORTHEASTERN OREGON: OREGON BUREAU OF MINES AND GEOLOGY: MINERAL RESOURCES OF OREGON, V. 1, NO.8, P. 36-49.

Reference (Deposit): WIESS, P.L., AND OTHERS, 1976, MINERAL RESOURCES OF THE EAGLE CAP WILDERNESS AND ADJACENT AREAS, OREGON: USGS BULL. 1385-E, P. 35-45.

Reference (Deposit): BROOKS, H.C, AND RAMP, L., 1968, GOLD AND SILVER IN OREGON: ODGMI BULL. 61, P. 89-90

Oregon Gold

"Where to Find Gold in Oregon" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Oregon. Read more: Where to Find Gold in Oregon.